Compositions: coating or plastic – Coating or plastic compositions – Dental
Reexamination Certificate
2006-08-01
2006-08-01
Koslow, C. Melissa (Department: 1755)
Compositions: coating or plastic
Coating or plastic compositions
Dental
C106S690000, C106S691000, C424S601000, C424S602000, C623S023560, C623S023620, C623S023610, C501S001000, C501S111000, C501S154000
Reexamination Certificate
active
07083672
ABSTRACT:
The present invention is directed to magnesium phosphate ceramics and their methods of manufacture. The composition of the invention is produced by combining a mixture of a substantially dry powder component with a liquid component. The substantially dry powder component comprises a sparsely soluble oxide powder, an alkali metal phosphate powder, a sparsely soluble silicate powder, with the balance of the substantially dry powder component comprising at least one powder selected from the group consisting of bioactive powders, biocompatible powders, fluorescent powders, fluoride releasing powders, and radiopaque powders. The liquid component comprises a pH modifying agent, a monovalent alkali metal phosphate in aqueous solution, the balance of the liquid component being water. The use of calcined magnesium oxide as the oxide powder and hydroxylapatite as the bioactive powder produces a self-setting ceramic that is particularly suited for use in dental and orthopedic applications.
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Primus Carolyn
Wagh Arun S.
Dentsply International Inc.
Koslow C. Melissa
McNees Wallace & Nurick LLC
University of Chicago
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